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Windows
Analysis Report
PAYNOW_2023_08_002783pdf.exe
Overview
General Information
Detection
FormBook, GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Yara detected FormBook
Malicious sample detected (through community Yara rule)
Antivirus / Scanner detection for submitted sample
System process connects to network (likely due to code injection or exploit)
Antivirus detection for URL or domain
Yara detected GuLoader
Snort IDS alert for network traffic
Tries to steal Mail credentials (via file / registry access)
Maps a DLL or memory area into another process
Writes to foreign memory regions
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Performs DNS queries to domains with low reputation
Injects a PE file into a foreign processes
Queues an APC in another process (thread injection)
Modifies the context of a thread in another process (thread injection)
Uses ipconfig to lookup or modify the Windows network settings
Tries to harvest and steal browser information (history, passwords, etc)
Uses 32bit PE files
Yara signature match
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Sample file is different than original file name gathered from version info
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Checks if the current process is being debugged
PE / OLE file has an invalid certificate
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality for read data from the clipboard
Classification
- System is w10x64native
- PAYNOW_2023_08_002783pdf.exe (PID: 7016 cmdline:
C:\Users\u ser\Deskto p\PAYNOW_2 023_08_002 783pdf.exe MD5: 96BEDAAD0D23CC93D7133F9EDBD697FE) - PAYNOW_2023_08_002783pdf.exe (PID: 7664 cmdline:
C:\Users\u ser\Deskto p\PAYNOW_2 023_08_002 783pdf.exe MD5: 96BEDAAD0D23CC93D7133F9EDBD697FE) - lzttCsgdUUaPRcRtGYKMQEk.exe (PID: 5608 cmdline:
"C:\Progra m Files (x 86)\stTISP AufBYYzAhS mDOuibRKIT HPhLnmXtSK hHQTqunZOW ljVritEbCa VKRaRdieNB fNGWXCJ\lz ttCsgdUUaP RcRtGYKMQE k.exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - ipconfig.exe (PID: 6480 cmdline:
C:\Windows \SysWOW64\ ipconfig.e xe MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB) - lzttCsgdUUaPRcRtGYKMQEk.exe (PID: 1948 cmdline:
"C:\Progra m Files (x 86)\stTISP AufBYYzAhS mDOuibRKIT HPhLnmXtSK hHQTqunZOW ljVritEbCa VKRaRdieNB fNGWXCJ\lz ttCsgdUUaP RcRtGYKMQE k.exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - explorer.exe (PID: 5324 cmdline:
C:\Windows \Explorer. EXE MD5: 5EA66FF5AE5612F921BC9DA23BAC95F7) - firefox.exe (PID: 4812 cmdline:
C:\Program Files\Moz illa Firef ox\Firefox .exe MD5: FA9F4FC5D7ECAB5A20BF7A9D1251C851)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Formbook, Formbo | FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware. |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
CloudEyE, GuLoader | CloudEyE (initially named GuLoader) is a small VB5/6 downloader. It typically downloads RATs/Stealers, such as Agent Tesla, Arkei/Vidar, Formbook, Lokibot, Netwire and Remcos, often but not always from Google Drive. The downloaded payload is xored. | No Attribution |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 10 entries |
⊘No Sigma rule has matched
Timestamp: | 192.168.11.20162.0.239.14549992802844299 08/29/23-22:44:58.349228 |
SID: | 2844299 |
Source Port: | 49992 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.201.1.1.152617532023883 08/29/23-22:44:20.263657 |
SID: | 2023883 |
Source Port: | 52617 |
Destination Port: | 53 |
Protocol: | UDP |
Classtype: | Potentially Bad Traffic |
Timestamp: | 192.168.11.2043.154.67.17050013802844299 08/29/23-22:46:21.289633 |
SID: | 2844299 |
Source Port: | 50013 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2091.189.114.2750006802844299 08/29/23-22:45:54.815557 |
SID: | 2844299 |
Source Port: | 50006 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.201.1.1.151674532023883 08/29/23-22:45:23.372118 |
SID: | 2023883 |
Source Port: | 51674 |
Destination Port: | 53 |
Protocol: | UDP |
Classtype: | Potentially Bad Traffic |
Timestamp: | 192.168.11.2096.44.182.13149986802844299 08/29/23-22:44:39.530811 |
SID: | 2844299 |
Source Port: | 49986 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20169.150.247.3950001802844299 08/29/23-22:45:39.379006 |
SID: | 2844299 |
Source Port: | 50001 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20119.18.54.5150008802844299 08/29/23-22:46:02.907436 |
SID: | 2844299 |
Source Port: | 50008 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20107.148.17.6749984802844299 08/29/23-22:44:21.313042 |
SID: | 2844299 |
Source Port: | 49984 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20162.0.239.14549989802844299 08/29/23-22:44:50.239156 |
SID: | 2844299 |
Source Port: | 49989 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2091.189.114.2750004802844299 08/29/23-22:45:49.687566 |
SID: | 2844299 |
Source Port: | 50004 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20162.0.239.14549990802844299 08/29/23-22:44:52.945443 |
SID: | 2844299 |
Source Port: | 49990 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20169.150.247.3950003802844299 08/29/23-22:45:44.440602 |
SID: | 2844299 |
Source Port: | 50003 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2091.189.114.2750007802844299 08/29/23-22:45:57.377082 |
SID: | 2844299 |
Source Port: | 50007 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2096.44.182.13149988802844299 08/29/23-22:44:44.874482 |
SID: | 2844299 |
Source Port: | 49988 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2043.154.67.17050015802844299 08/29/23-22:46:26.820148 |
SID: | 2844299 |
Source Port: | 50015 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2096.44.182.13149985802844299 08/29/23-22:44:36.854685 |
SID: | 2844299 |
Source Port: | 49985 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2037.140.192.18750020802844299 08/29/23-22:46:46.411426 |
SID: | 2844299 |
Source Port: | 50020 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20169.150.247.3950000802844299 08/29/23-22:45:36.842368 |
SID: | 2844299 |
Source Port: | 50000 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20119.18.54.5150009802844299 08/29/23-22:46:05.552243 |
SID: | 2844299 |
Source Port: | 50009 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2051.79.96.11549997802844299 08/29/23-22:45:26.451440 |
SID: | 2844299 |
Source Port: | 49997 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20119.18.54.5150011802844299 08/29/23-22:46:10.860228 |
SID: | 2844299 |
Source Port: | 50011 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2043.154.67.17050012802844299 08/29/23-22:46:18.530131 |
SID: | 2844299 |
Source Port: | 50012 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20164.88.252.12250017802844299 08/29/23-22:46:35.359432 |
SID: | 2844299 |
Source Port: | 50017 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2091.189.114.2750005802844299 08/29/23-22:45:52.253310 |
SID: | 2844299 |
Source Port: | 50005 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20164.88.252.12250016802844299 08/29/23-22:46:32.642566 |
SID: | 2844299 |
Source Port: | 50016 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2051.79.96.11549996802844299 08/29/23-22:45:23.839294 |
SID: | 2844299 |
Source Port: | 49996 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2051.79.96.11549999802844299 08/29/23-22:45:31.699499 |
SID: | 2844299 |
Source Port: | 49999 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20164.88.252.12250019802844299 08/29/23-22:46:40.805912 |
SID: | 2844299 |
Source Port: | 50019 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | ReversingLabs: |
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Source: | Code function: | 4_2_00406435 | |
Source: | Code function: | 4_2_00405889 | |
Source: | Code function: | 4_2_004027A1 |
Networking |
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Source: | Network Connect: | Jump to behavior | ||
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